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    NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY CELL
    4.
    发明申请
    NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY CELL 审中-公开
    用于非水电解质二次电池的负极

    公开(公告)号：US20160344033A1

    公开(公告)日：2016-11-24

    申请号：US15108060

    申请日：2014-12-12

    Applicant: SANYO ELECTRIC CO., LTD.

    Inventor： Shinji Kasamatsu ,  Na Wang ,  Yoshio Kato

    IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/583 ,  H01M4/133 ,  H01M4/134

    CPC classification number: H01M4/622 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/583 ,  H01M4/587 ,  H01M4/621 ,  H01M10/0525

    Abstract: Adhesion between particles in a negative electrode for non-aqueous secondary cells is improved for better cycle characteristics. A negative electrode for non-aqueous secondary cells contains silicon-containing particles and graphite particles as negative electrode active materials. The graphite particles have a first coating layer that contains carboxymethyl cellulose, and the first coating layer has an average thickness of 10 nm or more. The silicon-containing particles have a second coating layer that contains carboxymethyl cellulose, and the second coating layer has an average thickness of 10 nm or more.

    Abstract translation: 改善非水性二次电池用负极中的颗粒之间的附着力，以获得更好的循环特性。 非水系二次电池用负极含有含硅粒子和石墨粒子作为负极活性物质。 石墨颗粒具有包含羧甲基纤维素的第一涂层，第一涂层的平均厚度为10nm以上。 含硅颗粒具有包含羧甲基纤维素的第二涂层，第二涂层的平均厚度为10nm以上。

    Negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
    10.
    发明授权
    Negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery 有权

    公开(公告)号：US10263252B2

    公开(公告)日：2019-04-16

    申请号：US15318103

    申请日：2015-08-27

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Na Wang ,  Shinji Kasamatsu ,  Yoshio Kato

    IPC: H01M4/133 ,  H01M4/38 ,  H01M4/48 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/134 ,  H01M4/36 ,  H01M4/485 ,  H01M10/052 ,  H01M4/02

    Abstract: A non-aqueous electrolyte secondary battery including a silicon material as a negative electrode active material has good discharge rate characteristics. A negative electrode according to an exemplary embodiment includes a negative-electrode current collector and a negative-electrode mixture layer formed on the current collector. The negative-electrode mixture layer contains graphite and a silicon material. A first region that extends from the surface of the mixture layer remote from the negative-electrode current collector in the thickness direction of the negative-electrode mixture layer and has a thickness equal to 40% of the thickness of the mixture layer contains a larger amount of the silicon material than a second region that extends from the surface of the mixture layer adjacent to the negative-electrode current collector and has a thickness equal to 40% of the thickness of the mixture layer. The first region has a lower density than the second region.

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